of the Fishery Board for Scotland. 
271 
ACTINOTROCHA. 
Mid-Water-Net. 
First and last appearance. — 5th September. 
Surface-Toic-Net. 
First appearance. — A few on 6th September. 
Last appearance. — 12th September. 
Bottom-Tow-Net, " 
First appearance. — 5th July. 
Last appearance. — 22nd September, I . 
Most frequent. — In August, four times, a few each time, and in Sep- 
tember, six or seven times ; very few as a rule. Only occurred 
once in July. 
Phoronis. 
Bottom-Tow-Net 
First appearance. — 18th July. 
Last appearance. — One on 22nd September. 
Sagitt^. 
Mid-Water-Net, 
First appearance. — 16th January, a few good. 
Last appearance. — 18th December, in swarms, 1 inch and less. Some 
showed sperm-cells (clear and translucent) and a large ovary. 
Most plentiful. — In December, in swarms as a rule. In May, June, and 
September, a very few got not unfrequently. None obtained in 
July, and only twice procured in August. On June 26th, sizes 
from 6 mm.-14 mm. On January 24th, forms, with reproductive 
organs small, but ova visible. 
Bottom-Tow-Net. 
First appearance. — 21st January, very few, about 1 inch. 
L Last appearance. — 18th December. 
Most plentiful. — From beginning of December to end of March. A few, 
generally, each time in December, but many at beginning of year, 
year. 
Surface-Tow-Net. 
First appearance. — 21st January, one or two about J inch. 
Last appearance. — 18th December, a few various sizes. 
Most plentiful. — In December, many as a rule each time. None got in 
June, July, and October. 
COPEPODA. 
As has often been pointed out no group is more important than the 
Copepoda in connection with the nourishment of fishes, especially in their 
post-larval stages, and they are ubiquitous in distribution. Their varying 
sizes — from the minute larval nauplii to the larger adults, such as Calanus, 
— as well as their highly nutritious nature, render them perhaps the most 
valuable fish-food in the ocean. 
Off Kiel Giesbrecht and Mobius procured some that have not yet been 
recognized at St Andrews, viz., Oithona spinirostris, Eurytemova 
hirundo, Luctdlus acuspes, Paracalanus parvus, Euchseta norvegica, 
